*Haemophilus influenzae* has at least 16 different virulence factors including Hap, the adhesion and penetration factor that allows for adhesion and invasion of cells. It also has a capsule that can prevent it from being engulfed by phagocytes and the hemoglobin-binding protein that obtains iron from hemoglobin for their own growth. 

Virulence Factors of *Haemophilus influenzae*

*Haemophilus influenzae* can cause *Haemophilus* influenzae Type b meningitis. *H. influenzae* is found in throat microbiota. Children around two months are more susceptible to the meningitis this forms. 

University of Wisconsin - Madison

Haemophilus influenzae Type b is an uncommon type of meningitis caused by *Haemophilus influenzae*. 

Haemophilus influenzae Type b

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

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